Structure of the haemagglutinin membrane glycoprotein of influenza virus at 3 A resolution
Wilson, I.A.; Skehel, J.J.; Wiley, D.C.
Nature 289(5796): 366-373
1981
ISSN/ISBN: 0028-0836 PMID: 7464906 Document Number: 170039
The haemagglutinin glycoprotein of influenza virus is a trimer comprising two structurally distinct regions: a triple-stranded coiled-coil of alpha-helices extends 76 A from the membrane and a globular region of antiparallel beta-sheet, which contains the receptor binding site and the variable antigenic determinants, is positioned on top of this stem. Each subunit has an unusual loop-like topology, starting at the membrane, extending 135 A distally and folding back to enter the membrane.